DE1152215B - Schmiermittel fuer die spanabhebende und spanlose Bearbeitung von Metallen - Google Patents

Schmiermittel fuer die spanabhebende und spanlose Bearbeitung von Metallen

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Publication number
DE1152215B
DE1152215B DEST16509A DEST016509A DE1152215B DE 1152215 B DE1152215 B DE 1152215B DE ST16509 A DEST16509 A DE ST16509A DE ST016509 A DEST016509 A DE ST016509A DE 1152215 B DE1152215 B DE 1152215B
Authority
DE
Germany
Prior art keywords
sulfur
lubricant
fatty acid
cutting
tall oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
DEST16509A
Other languages
English (en)
Inventor
Tore Per Gustav Stedt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of DE1152215B publication Critical patent/DE1152215B/de
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B45/00Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/02Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for lubricating, cooling, or cleaning
    • B21B45/0239Lubricating
    • B21B45/0242Lubricants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
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    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M101/00Lubricating compositions characterised by the base-material being a mineral or fatty oil
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    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M101/00Lubricating compositions characterised by the base-material being a mineral or fatty oil
    • C10M101/02Petroleum fractions
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    • C10M105/00Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
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    • C10M105/00Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/32Esters
    • C10M105/38Esters of polyhydroxy compounds
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    • C10M107/00Lubricating compositions characterised by the base-material being a macromolecular compound
    • C10M107/20Lubricating compositions characterised by the base-material being a macromolecular compound containing oxygen
    • C10M107/30Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M107/32Condensation polymers of aldehydes or ketones; Polyesters; Polyethers
    • C10M107/34Polyoxyalkylenes
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    • C10M111/00Lubrication compositions characterised by the base-material being a mixture of two or more compounds covered by more than one of the main groups C10M101/00 - C10M109/00, each of these compounds being essential
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    • C10M125/00Lubricating compositions characterised by the additive being an inorganic material
    • C10M125/06Sulfur
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    • C10M125/22Compounds containing sulfur, selenium or tellurium
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    • C10M131/00Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen
    • C10M131/08Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing halogen containing carbon, hydrogen, halogen and oxygen
    • C10M131/10Alcohols; Ethers; Aldehydes; Ketones
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    • C10M131/14Halogenated waxes
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    • C10M135/00Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing sulfur, selenium or tellurium
    • C10M135/20Thiols; Sulfides; Polysulfides
    • C10M135/22Thiols; Sulfides; Polysulfides containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
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    • C10M135/32Heterocyclic sulfur, selenium or tellurium compounds
    • C10M135/36Heterocyclic sulfur, selenium or tellurium compounds the ring containing sulfur and carbon with nitrogen or oxygen
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    • C10M137/00Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus
    • C10M137/02Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing phosphorus having no phosphorus-to-carbon bond
    • C10M137/04Phosphate esters
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    • C10M169/00Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
    • C10M169/04Mixtures of base-materials and additives
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    • C10M173/00Lubricating compositions containing more than 10% water
    • C10M173/02Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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    • C10N2040/20Metal working
    • C10N2040/243Cold working
    • CCHEMISTRY; METALLURGY
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    • C10N2040/00Specified use or application for which the lubricating composition is intended
    • C10N2040/20Metal working
    • C10N2040/244Metal working of specific metals
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00Specified use or application for which the lubricating composition is intended
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    • C10N2040/244Metal working of specific metals
    • C10N2040/245Soft metals, e.g. aluminum
    • CCHEMISTRY; METALLURGY
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    • C10N2040/00Specified use or application for which the lubricating composition is intended
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    • C10N2040/246Iron or steel
    • CCHEMISTRY; METALLURGY
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    • CCHEMISTRY; METALLURGY
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Description

Die Erfindung betrifft ein Schmiermittel zur Verwendung als z. B. Schneidöl, Ziehöl, Walzöl bei spanloser und spanabhebender Bearbeitung von Metallen, insbesondere beim Ziehen und Walzen von Rohren, beispielsweise bei stufenweisen Walzen nach dem Pilgerschrittverfahren.
Es ist bereits bekannt, eine Mischung von Wollfettsäure und Kalk in Trichloräthylen oder Perchloräthylen als Zieh- und Preßöl sowie als Schmiermittel bei stufenweisem Walzen zu benutzen. Dieses Schmiermittel hat jedoch den Nachteil, daß es sich nur sehr schwer entfernen läßt, insbesondere weil die durch die Fettsäure und den Kalk gebildeten Kalkseifen sehr fest an der Metalloberfläche haften. Dieser Nachteil bedeutet hohe Unkosten für das Entfetten und, falls die Entfettung nicht einwandfrei vorgenommen wird, ein Aufkohlen des Metalls nach der Bearbeitung durch Glühen und dadurch eintretende Verschlechterung der Eigenschaften des Metalls, besonders wenn es sich um rostfreien Stahl handelt.
Diese Nachteile entfallen bei Verwendung des erfindungsgemäßen Schmiermittels.
Das erfindungsgemäße Schmieröl für spanabhebende oder spanlose Bearbeitung von Metall, besonders als Ziehöl beim Ziehen und stufenweisen Walzen von Rohren, besteht aus einer Mischung der folgenden Komponenten:
A. Ester mehrwertiger Alkohole und Tallöl,
B. Ester zwischen mehrwertigen Alkoholen und Fettsäuren von Pflanzenfetten und/oder Fisch- und/ oder sonstigen Tierfetten,
C. einem oder mehreren an sich bekannten schutzfilmbildenden Zusatzmitteln aus der Gruppe der chlorhaltigen Verbindungen, wie chloriertes Paraffin, Pentachlorphenol; der schwefelhaltigen Verbindungen, wie Schwefel, Schwefelchlorid, Schwefeloxychlorid, organische Schwefelverbindungen, wie Dialkylsulfide, z. B. Diäthylsulfid, oder Oxyalkylsulfide, z. B. Dioxyäthylsulfid, oder Oxyalkylsulfide, z. B. Dioxyäthylsulfid, Merkaptobenzothiazol, Natriummerkaptobenzothiazol; der phosphorhaltigen Verbindungen wie Trikresylphosphat.
Ein vorteilhaftes Schmiermittel nach der Erfindung enthält neben dem Bestandteil C 10 bis 90 Gewichtsprozent des Bestandteils A und 90 bis 10 Gewichtsprozent des Bestandteils B. Die günstigste Zusammensetzung enthält 30 bis 70% von A und 70 bis 30% von B.
Ein erfindungsgemäßes Schmiermittel kann bestehen aus 5 bis 90 Gewichtsprozent von A, 90 bis
Schmiermittel für die spanabhebende
und spanlose Bearbeitung von Metallen
Anmelder:
Tore Per Gustav Stedt,
Näsbypark (Schweden)
Vertreter: Dr.-Ing. A. v. Kreisler,
Dr.-Ing. K. Schönwald und Dr.-Ing. Th. Meyer,
Patentanwälte, Köln 1, Deichmannhaus
Beanspruchte Priorität:
Schweden vom 22. Mai 1959 (Nr. 4885)
Tore Per Gustav Stedt, Näsbypark (Schweden),
ist als Erfinder genannt worden
5 Gewichtsprozent von B und 5 bis 50 Gewichtsprozent Zusatzmittel C. Die günstigste Mischung enthält 15 bis 50% von A und 15 bis 50% von B sowie 10 bis 30% von C.
Als mehrwertige Alkohole eignen sich vorzugsweise Polyalkylenglykole, wie z. B. Polyäthylenglykol oder Polypropylenglykol, jedoch besonders Polyäthylenglykol mit einem Molekulargewicht zwisehen 500 und 1500.
Das Tallöl besteht vorzugsweise aus raffiniertem Tallöl, sogenannter Tallfettsäure, mit einem Harzsäuregehalt von höchstens 20 Gewichtsprozent. Es ist auch möglich, gewöhnliches Tallöl, raffiniertes Tallöl oder Wollfettsäure zu benutzen, die polymerisiert oder kondensiert wurden.
Da das Tallöl preislich der billigste Bestandteil ist, wird es als vorwiegender Bestandteil in entsprechend großer Menge in der Schmierölmischung benutzt.
Die Ester des Tallöls mit den Alkoholen dienen hierbei als Dispergiermittel für die in Fettsäureestern meist enthaltenen großen Mengen an unverseifbaren Stoffen. Wollfettsäure hat beispielsweise einen Gehalt von 16 bis 24% unverseifbaren Stoffen. Das Tallöl enthält dagegen nur etwa 3 bis 5% unverseifbare Bestandteile. Die unverseifbaren Stoffe müssen völlig dispergiert sein, damit eine einwandfreie Schmierung möglich wird.
Die in der erfindungsgemäßen Mischung vorhandenen veresterten Fettsäuren können auch aus einzelnen reinen Fettsäuren bestehen, z. B. aus einer oder mehreren der Säuren: Laurin-, Myristin-,
309 649/260
Palmitin-, Stearin-, Arachinsäure und andere gesättigte Säuren oder Öl-, Elaidin-, Linol-, Linolensäure und andere ungesättigte Säuren. Insbesondere werden jedoch aus Naturerzeugnissen erhaltene Mischungen oder raffinierte Mischungen aus Fettsäuren benutzt, z. B. aus Schweinefett, Talg, Bienenwachs, Wollfett, Lanolin und aus anderen Tierfetten. Die Pflanzenöle, die als Rohstoff bei der Herstellung des erfindungsgemäßen Schmiermittels verwendet werden oder verwendbar sind, haben meist einen niedrigen Gehalt an unverseifbaren Stoffen und können bestehen aus z. B. Oliven-, Sesam-, Sojabohnen-, Baumwollsamen-, Palmöl, Kokosfett und anderen Pflanzenfetten. Besonders können Rapsfett-Ölfett-Säuren verwendet werden. Die im Tallöl enthaltenen Harzsäuren können mit reiner Abietinsäure oder natürlichem Kolophonium ergänzt werden.
Die zwei- und/oder mehrwertigen höheren Alkohole können aus Glykolen oder Glyzerinen, aber auch aus vier-, fünf- oder sechswertigen Alkoholen bestehen. Beispielsweise eignen sich Äthylenglykol, Diäthylenglykol, Triäthylenglykol und die schon erwähnten Polyäthylenglykole, entsprechende Propylenglykole, ein- oder mehrwertige Glyzerine, Pentaerythrit, Sorbit, Trioxymethylpropan.
Um auf dem geschmierten und bearbeiteten Metall eine Schutzschicht zu erhalten, wird das Schmiermittel mit einem bekannten Zusatzmittel versehen, welches am Metall bindet. Das Zusatzmittel wählt man aus einem oder mehreren Stoffen der Gruppen: chlorhaltige Mittel, wie chloriertes Paraffin oder Pentachlorphenol; schwefelhaltige Mittel, wie Schwefelchlorid, Schwefeloxychlorid; organische Schwefelverbindungen, wie Dialkylsulfide, z. B. Diäthylsulfid; Oxyalkylsulfide, wie Dioxyäthylsulfid, Merkaptobenzothiazol, Natriummerkaptobenzothiazol; oder phosphorhaltige Zusatzmittel, wie beispielsweise Trikresylphosphat.
Das Schmiermittel kann ferner noch an sich bekannte Schmierstoffe, wie Mineralschweröle oder synthetische Schmieröle, enthalten.
Durch Untersuchungen wurde festgestellt, daß reine Woüfettsäureester, auch wenn sie mit den obigen Zusatzmitteln versetzt sind, nicht die beabsichtigte Wirkung haben. Hierbei treten nämlich Schwierigkeiten auf, wenn man das Metall völlig von Schmiermittelresten reinigen will. Diese Schwierigkeit entfällt jedoch, wenn man erfindungsgemäß eine Mischung von Fettsäureester und Tallölester benutzt, was zum großen Teil darauf beruht, daß die Tallfettester als Dispergiermittel für die in den meisten Fetten, besonders in tierischen Fetten, enthaltenen großen Mengen unverseifbarer Bestandteile wirken. Andernfalls würden diese unverseifbaren Stoffe ausgeschieden werden und am Metall haftenbleiben, wonach es schwierig ist, sie von dort wieder zu entfernen. Die Tallölester wirken auch für die obenerwähnten Zusatzmittel als Dispergiermittel.
Die Verwendung von Fettsäureestern auch von Tallölestern mehrwertiger Alkohole in Schmiermitteln ist bekannt, führt aber bei der spanabhebenden und spanlosen Bearbeitung von Metallen nur zu ungenügenden Ergebnissen, wie die Versuche Nr. 1 der folgenden Tabellen zeigen.
Nachstehend folgen drei Beispiele von erfindungsgemäßen Mischungen und Angaben über damit durchgeführte Versuche an Pilgerschrittwalzwerken, wobei die Beurteilung durch Zensuren ausgedrückt wird, und zwar durch die Zahlen 0 bis 10, wobei in bezug auf die Oberflächengüte des Walzgutes die Zensur 0 die schlechteste und die Zensur 10 die beste ist. Hierbei werden die innere und die äußere Oberflächengüte der gewalzten Rohre einzeln bewertet. Besonders bei Rohren für die Lebensmittel- und Arzneimittelindustrie ist die innere Oberflächengüte (Glätte) von größter Bedeutung.
Schmiermittel
Nr.
Zusammensetzung Gewichtsprozent
Oberflächengüte
außen I innen
1
2
Tallfettsäurepolyäthylenglykolester
Tallfettsäurepolyäthylenglykolester Trikresylphosphat
Tallfettsäurepolyäthylenglykolester Wollfettsäurepolyäthylenglykolester Trikresylphosphat
Mischung aus Wollfett und Kalk 100
90
10
80
10
10
10
10
2 ! 1
Aus obigen Versuchsergebnissen ist ersichtlich, daß das erfindungsgemäße Schmierfett Nr. 3 den bekannten Schmierfetten Nr. 1, 2 und 4 in bezug auf Oberflächengüte von im Pilgerschrittverfahren und nachbehandelten gewalzten Röhren überlegen ist.
Nachstehend folgen die Ergebnisse von Walzversuchen mit verschiedenen Schmiermitteln dreierlei Art, nämlich erstens Schmiermittel, die nur den Bestandteil A (hier Tallfettsäurepolyglykolester) enthalten, zweitens Schmiermittel, die sowohl diesen Bestandteil wie auch Bestandteil B (Wollfettsäurepolyglykolester) enthalten, und drittens Schmiermittel, die ebenfalls beide Bestandteile A und B, aber außerdem ein chlorhaltiges oder chlor- und schwefelhaltiges Zusatzmittel C enthalten.
Es wurden Rohre aus rostfreiem Stahl im Pilgerschrittverfahren gewalzt. Stahlzusammensetzung nach schwedischer Industrienorm SIS 2320. Richtwertanalyse: 17% Chrom, 0,08% Kohlenstoff. Walzgutreduzierung: 60%, Rohrdurchmesser 21Z2" und 3V2"-
5 1 (A) 6 Versuch Nr. 2 (A + B) 4 Mikron 3 (A + B) 4
Tallfettsäurepoly- 80%Tallfettsäure- Oberfläche in kochender Salpetersäure 2 Mikron 20%Tallfettsäure- 80%Tallfettsäure-
äthylenglykol- polyäthylen- Qulitative Chloridanalyse. polyäthylen- polyäth>len-
Schmiermittel ester glykolester Starke Kratzer glykolester glykolester
20% Wollfettsäure- 80% Wollfettsäure- 20% Kalk
polyäthylen- polyäthylen-
glykolester glykolester
Anschweißen des Wie bei Versuch Wie bei Versuch Anschweißen an Dorn
Walzguts an Nr. 1, jedoch in be Nr. 2 und Spannzange.
Erscheinungen beim Dorn und Spann deutend geringerem Der Kalk ver
Walzen zange (Backen) Ausmaß schlechtert die Ober
fläche. Es ist nicht
ausgeschlossen, daß
Kalk und andere
Bestandteile in die
Oberfläche einge
walzt werden
Sehr ungleichmä Gleichmäßigerer Wie Versuch Nr. 2 Sehr ungleichmäßi
ßiger Vorschub Vorschub als bei ger Vorschub
Vorschub 7 mm/10 Stufen Versuch Nr. 1 7 mm/6 Stufen
80 Stufen/Min. 7 mm/2 Stufen
7 mm/Stufe (Hub) Sehr leicht zu ent Sehr leicht zu ent Wie Versuch Nr. 2 Der Kalk erschwerte
fetten fetten das Entfetten
Entfettung
im Sodalösungsbad —·
(Soda in Wasser) aufgelöst.
Aufkohlungsversuch
Korrosion Wie Versuch Nr. 2 Starke Kratzer
Oberflächenfeinheit
(Profiltiefe). Äußere
Rohroberfläche
(Fortsetzung)
- Vorschub 5 Versuch Nr. 7 (A + B + C)
80 Stufen/Min. 64 % Tallfettsäurepoly- 6 (A + B + C) 64% Tallfettsäurepoly-
Schmiermittel 7 mm/Stufe (Hub) äthylenglykolester 64 % Tallfettsäurepoly- äthylenglykolester
Entfettung 16% Wollfettsäurepoly- äthylenglykolester 16° 0 Wollfettsäurepoly-
im Sodalösungsbad äthylenglykolester 16% WoIIf ettsäurepoly- äthylenglykolester
(Soda in Wasser) 20% Kalk äthylenglykolester 15% Zusatz C
20 7o gechlortes Paraffin 5 % Merkoptobenzo-
mit 42% Chlor thiazol
Gleichbleibender Vorschub gehalt (Zusatz C) Die bei Versuch Nr. 6
Erscheinungen beim war durchführbar. In Ein Walzen ohne Schmiermittel festgestellte Neigung zum
Walzen zelfällen Anschweißen am träger (Kalk od. ä.) war Verkratzen bei Rohren
Dorn, aber nicht an der undurchführbar. Bei über IVa Zoll Durch
Spannzange. kleineren Walzgutdurch messer hörte bei Zu-
Ungünstige Wirkung des messern war kein An mischung eines schwefel
Kalks wie bei Versuch schweißen oder Ver- haltigen Zusatzstoffs auf
Nr. 4 kratzen feststellbar
Gleichbleibender Vorschub Gleichbleibender Vorschub
7 mm/Stufe Gleichbleibender Vorschub 7 mm/Stufe
7 mm/Stufe
Der Kalk erschwerte das Sehr leicht zu entfetten
Entfetten Sehr leicht zu entfetten
(Fortsetzung)
5 6 Mikron
3 Mikron
Versuch Nr. 7 (A + B + C)
6 (A + B + C) Keine Anzeichen von Auf
kohlung
Aufkohlungsversuch Keine Anzeichen von Auf
kohlung
Keine Chloridspuren
feststellbar
Korrosion Keine Chloridspuren
feststellbar
2 Mikron
0,8 Mikron
Oberflächenfeinheit
(Profiltiefe). Äußere
Rohroberfläche
2 Mikron
0,8 Mikron
Aus den Weiten über die Oberflächeneinheit geht hervor, daß man erstklassige Ergebnisse nur mit Schmiermitteln erzielen kann, welche alle drei Bestandteile A, B und C zusammen enthalten. Daß auch die Komponente B für sich allein als Schmiermittel für spanabhebende und spanlose Bearbeitung von Metallen nur schlecht geeignet ist, ergibt sich aus dem nachstehenden Vergleichsversuch, bei dem Wollfettsäurepolyäthylenglykolester verwendet und im übrigen wie bei den voranstehenden Beispielen gearbeitet wurde. Es wurde festgestellt, daß das Walzgut beim Walzen sich am Dorn und an der Spannzange (an den Backen) anschweißt.
Der Vorschub ist sehr ungleichmäßig (Vorschub 80 Stufen/Min., 7 mm/Stufe [Hub]).
Die Entfettung im Sodalösungsbad (Soda in Wasser) läßt sich sehr leicht durchführen.
Die Oberfläche ist von starken Kratzern bedeckt.
Dieser Vergleichsversuch läßt in Verbindung mit den übrigen Versuchen deutlich den synergistischen Effekt der beanspruchten Mischung aller drei Kornponenten erkennen.

Claims (6)

PATENTANSPRÜCHE:
1. Schmiermittel für die spanabhebende und spanlose Bearbeitung von Metallen, insbesondere für das Ziehen und stufenweise Walzen von Rohren, dadurch gekennzeichnet, daß es aus einer Mischung der folgenden Komponenten besteht:
A. Estern mehrwertiger Alkohole mit Tallöl,
B. Estern mehrwertiger Alkohole mit Fettsäuren von Pflanzenfetten und/oder Fisch- und/oder sonstigen Tierfetten,
C. einem oder mehreren an sich bekannten, schutzfilmbildenden Zusatzmitteln aus der Gruppe der chlorhaltigen Verbindungen, wie
45 chloriertes Paraffin, Pentachlorphenol; der schwefelhaltigen Verbindungen, wie Schwefel, Schwefelchlorid, Schwefeloxychlorid, organische Schwefelverbindungen, wie Dialkylsulfide, z. B. Diäthylsulfid, oder Oxyalkylsulfide, z. B. Dioxyäthylsulfid, Merkaptobenzothiazol, Natriummerkaptobenzothiazol; der phosphorhaltigen Verbindungen wie Trikresylphosphat.
2. Schmiermittel nach Anspruch 1, dadurch gekennzeichnet, daß die mehrwertigen Alkohole Polyalkylenglykole, wie Polyäthylen- oder PoIypropylenglykol, vorzugsweise Polyäthylenglykol mit einem Molekulargewicht zwischen 500 und 1500, sind.
3. Schmiermittel nach Anspruch 1 und 2, dadurch gekennzeichnet, daß das Tallöl ein raffiniertes Tallöl (sogenannte Tallfettsäure) mit einem Harzsäuregehalt von höchstens 20 Gewichtsprozent ist.
4. Schmiermittel nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß die Naturfettsäuren aus Wollfett und/oder Rapsöl und/oder Lanolin erhalten worden sind.
5. Schmiermittel nach Anspruch 1 bis 4, dadurch gekennzeichnet, daß das gegebenenfalls raffinierte Tallöl und/oder die Wollfettsäure in polymerisierter oder kondensierter Form vorliegen.
6. Schmiermittel nach Anspruch 1 bis 5, dadurch gekennzeichnet, daß es weiterhin zusätzlich bekannte Schmiermittel, wie mineralischer und synthetischer Schmieröle, enthält.
In Betracht gezogene Druckschriften:
Deutsche Patentschrift Nr. 626 491;
französische Patentschrift Nr. 997 743.
© 309 649/260 7.
DEST16509A 1959-05-22 1960-05-23 Schmiermittel fuer die spanabhebende und spanlose Bearbeitung von Metallen Pending DE1152215B (de)

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Also Published As

Publication number Publication date
US3130159A (en) 1964-04-21
GB904964A (en) 1962-09-05
BE591045A (de)
NL251813A (de)
CH440518A (de) 1967-07-31

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